摘要:
A plurality of imaging optical lenses (301a to 301c) form a plurality of subject images on a plurality of imaging regions (302a to 302c), respectively. When viewed along a direction parallel with optical axes, at least one straight line connecting corresponding points in at least one pair of the subject images that are formed by at least one pair of the imaging optical lenses is inclined with respect to a direction in which pixels are arranged in the imaging regions. In this way, a high-resolution image always can be obtained regardless of the subject distance.
摘要:
A plurality of lenses 102a to 102d arranged in the same plane form a plurality of subject images on a plurality of imaging regions 104a to 104d. Vertical line directions and horizontal line directions of the pixel arrangement in the respective plurality of imaging regions are equal to one another among the plurality of imaging regions. Further, at least one pair of subject images received by at least one pair of imaging regions having a parallax in the vertical line (or horizontal line) direction among the plurality of imaging regions are shifted from each other by a predetermined amount in the horizontal line (or vertical line) direction. By performing pixel shifting in a direction perpendicular to the direction in which a parallax is generated, it always is possible to obtain a high-resolution image even when the subject distance varies.
摘要:
A plurality of lenses 102a to 102d arranged in the same plane form a plurality of subject images on a plurality of imaging regions 104a to 104d. Vertical line directions and horizontal line directions of the pixel arrangement in the respective plurality of imaging regions are equal to one another among the plurality of imaging regions. Further, at least one pair of subject images received by at least one pair of imaging regions having a parallax in the vertical line (or horizontal line) direction among the plurality of imaging regions are shifted from each other by a predetermined amount in the horizontal line (or vertical line) direction. By performing pixel shifting in a direction perpendicular to the direction in which a parallax is generated, it always is possible to obtain a high-resolution image even when the subject distance varies.
摘要:
A plurality of imaging optical lenses (301a to 301c) form a plurality of subject images on a plurality of imaging regions (302a to 302c), respectively. When viewed along a direction parallel with optical axes, at least one straight line connecting corresponding points in at least one pair of the subject images that are formed by at least one pair of the imaging optical lenses is inclined with respect to a direction in which pixels are arranged in the imaging regions. In this way, a high-resolution image always can be obtained regardless of the subject distance.
摘要:
An electric motor position control apparatus in accordance with the present invention has a plurality of sets of control parameters including at least the proportional gain of a position control section and the proportional gain of a speed control section beforehand, wherein set selection and the measurement of the response state of an electric motor to a position command at the time when the electric motor is controlled by using the control parameters of the selected set are carried out sequentially, one preferable set is selected depending on the measured response state, the control parameters of the selected set are set, and the control parameters are changed as a set.
摘要:
An apparatus and method for controlling an electric motor is disclosed. The apparatus includes an instruction inputting section for transmitting an instruction for an electric motor or a control object coupled to said electric motor and a prefilter section for outputting a follow-up instruction value by acting on the instruction. The prefilter section has a prefilter concurrently having characteristics of lowered gain at a prescribed frequency and frequencies in the vicinity thereof, and characteristics of limiting the gain in a high range. An instruction follow-up controlling section provides a controlling instruction follow-up so that a quantity of a state of said electric motor or control object follows the follow-up instruction value.
摘要:
A method for position-sensorless motor control is provided, wherein a rotor-position estimation current signal is superimposed on the &ggr;-axis direction component of a target current vector representing target currents of stator windings. The period of the current signal is an even multiple of a PWM carrier period and varies at random. The amplitude of the current signal increases with the amplitudes of the target currents. An even number of samples are obtained from the &dgr;-axis direction component of a current vector representing detected currents of the stator windings in each period of the current signal. A discrete Fourier integration of the samples determines the amplitude of a current response to the current signal in the &dgr;-axis direction. The &ggr;-axis direction is corrected so that the current response substantially shrinks to zero in the &dgr;-axis direction.
摘要:
An imaging device (1) includes a camera unit (3) that captures images of the same object, respectively, using two optical systems, a face part detection unit (9) that detects a plurality of face parts composing a face included in each of the images captured by the camera unit (3), a face part luminance calculation unit (10) that calculates luminance of the detected plurality of face parts, and an exposure control value determination unit (12) that determines an exposure control value of the camera unit (3) based on the luminance of the plurality of face parts. A distance measurement unit (17) in the imaging device (1) measures distances to the face parts based on the images captured by the camera unit (3) using the exposure control value. Thus, the imaging device (1) can measure the distances to the face parts with high accuracy.
摘要:
An image pickup apparatus of the present invention includes: a lens array having a plurality of lenses; a plurality of image pickup regions (123) disposed to correspond to the plurality of lenses one-to-one and each including a light receiving surface substantially perpendicular to a direction in which an optical axis of the corresponding lens extends; a temperature sensor (126) disposed in the vicinity of the lens array to detect a temperature; a correction coefficient generating portion (142) configured to generate, based on the temperature, correction coefficients including correction coefficients correlated to magnifications of images taken in the image pickup regions; and a correction calculating portion (143, 144) configured to correct, based on the correction coefficients, image pickup signals generated in the image pickup regions and calculate a parallax using the corrected image pickup signals.
摘要:
The number of thermal sensors in an imaging device that requires temperature measurement is reduced. The imaging device includes: a lens array (112) including lenses; an imaging element (122) provided at a predetermined distance from the lens array (112) and having imaging areas respectively corresponding to the lenses; a light-shielding wall (113) which partitions a space between the lens array and the imaging element so as to prevent light entering each of the lenses from reaching the imaging areas different from a corresponding one of the imaging areas; an imaging signal input unit (133) configured to generate an imaging signal by digitalizing an electric signal provided by the imaging element; and a temperature estimation unit (143) configured to calculate, from the imaging signal, a length of an image of the light-shielding wall projected on an imaging plane of the imaging element, and to estimate a temperature using the calculated length of the image of the light-shielding wall.